GST Calculator – Free Online GST Calculator India 2025
Calculate GST inclusive and exclusive prices instantly with our free gst calculator. Supports 5%, 12%, 18%, 28% slabs.
What is GST Calculator?
GST stands for Goods and Services Tax, implemented in India on July 1, 2017. A gst calculator helps you calculate tax amount and final price for products and services. Our free gst calculator supports all Indian GST slabs – 5%, 12%, 18%, 28% – with instant CGST and SGST split.
Business owners, shopkeepers, freelancers, and consumers across India use this tool daily for billing, invoicing, and checking prices. It works 100% in browser, no data upload, ensuring your financial data stays private.
How GST Calculator Works
Two modes: Add GST (exclusive to inclusive) and Remove GST (inclusive to exclusive). Formula for Add: GST = Amount × Rate/100, Gross = Amount + GST. Formula for Remove: Net = Amount ÷ (1 + Rate/100), GST = Amount − Net. Our gst calculator does both instantly and splits GST into CGST and SGST equally for intra-state sales.
Example: ₹1,000 at 18% → GST ₹180 (CGST ₹90 + SGST ₹90), Total ₹1,180. Reverse: ₹1,180 inclusive → Net ₹1,000, GST ₹180.
Why Use Our GST Calculator
This gst calculator is built for India – rupee format, all slabs, CGST/SGST split, IGST ready. Small businesses in Maharashtra, Gujarat, Tamil Nadu use it for quick billing without software. Amazon and Flipkart sellers verify prices. CA students practice calculations.
It saves time compared to manual calculation or Excel. Works on mobile during market visits. Pairs with our Discount Calculator for sale prices, EMI Calculator for loan GST, and Percentage Calculator.
GST Slabs in India 2025
5%: Essential items – packaged food, tea, coffee, coal, fertilizers.
12%: Processed food, mobiles, medicines, umbrellas.
18%: Most services, electronics, restaurants, soaps – standard rate.
28%: Luxury items – cars, AC, tobacco, aerated drinks.
0%: Fresh food, milk, eggs, education, healthcare.
Our gst calculator lets you select these slabs instantly or enter custom rate for cess or special cases.
GST Calculator for Business
Traders need to issue GST-compliant invoices showing taxable value, CGST, SGST separately. Our tool gives exact split for intra-state. For inter-state, use total GST as IGST. This helps kirana stores, manufacturers, and service providers in India maintain compliance without expensive software.
Freelancers charging 18% GST on services can quickly calculate invoice totals. Example: ₹50,000 service → GST ₹9,000 → Total ₹59,000. The calculator prevents rounding errors that cause reconciliation issues.
For reverse charge mechanism, calculate GST separately and add to expense. Learn official rates on GST Portal and Wikipedia.
Related Tools
Discount Calculator • EMI Calculator • Percentage Calculator • Invoice Generator • All Tools
FAQ
Is gst calculator free? Yes, 100% free for all users.
Does it calculate CGST SGST? Yes, splits equally for intra-state. Use total for IGST.
What is difference between add and remove? Add calculates GST on net price. Remove extracts GST from inclusive price.
Is it accurate for filing? Yes, uses government formulas. Always verify with CA for filing.
Does it work offline? Yes, after page loads, calculations work without internet.